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Move AttributedText view into it's own file

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This commit is contained in:
redstrate 2020-06-04 09:46:06 -04:00
parent c2c995e63c
commit 7ad4b26fc6
4 changed files with 106 additions and 101 deletions
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4
MobileFort/MobileFort.xcodeproj/project.pbxproj
View file

@ -16,6 +16,7 @@
03BCD7432488947200DA1F27 /* ProfileView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 03BCD7422488947200DA1F27 /* ProfileView.swift */; };
03BCD7452488948200DA1F27 /* PostView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 03BCD7442488948200DA1F27 /* PostView.swift */; };
03BCD7482488985A00DA1F27 /* RemoteImage in Frameworks */ = {isa = PBXBuildFile; productRef = 03BCD7472488985A00DA1F27 /* RemoteImage */; };
03BCD74A2489322500DA1F27 /* AttributedText.swift in Sources */ = {isa = PBXBuildFile; fileRef = 03BCD7492489322500DA1F27 /* AttributedText.swift */; };
/* End PBXBuildFile section */
/* Begin PBXFileReference section */
@ -29,6 +30,7 @@
03427F6C248887D200A0073D /* Common.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Common.swift; sourceTree = "<group>"; };
03BCD7422488947200DA1F27 /* ProfileView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ProfileView.swift; sourceTree = "<group>"; };
03BCD7442488948200DA1F27 /* PostView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PostView.swift; sourceTree = "<group>"; };
03BCD7492489322500DA1F27 /* AttributedText.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AttributedText.swift; sourceTree = "<group>"; };
/* End PBXFileReference section */
/* Begin PBXFrameworksBuildPhase section */
@ -71,6 +73,7 @@
03427F6C248887D200A0073D /* Common.swift */,
03BCD7422488947200DA1F27 /* ProfileView.swift */,
03BCD7442488948200DA1F27 /* PostView.swift */,
03BCD7492489322500DA1F27 /* AttributedText.swift */,
);
path = MobileFort;
sourceTree = "<group>";
@ -155,6 +158,7 @@
03BCD7432488947200DA1F27 /* ProfileView.swift in Sources */,
03427F5B2488856C00A0073D /* SceneDelegate.swift in Sources */,
03BCD7452488948200DA1F27 /* PostView.swift in Sources */,
03BCD74A2489322500DA1F27 /* AttributedText.swift in Sources */,
03427F5D2488856C00A0073D /* MainView.swift in Sources */,
);
runOnlyForDeploymentPostprocessing = 0;

101
MobileFort/MobileFort/AttributedText.swift Normal file
View file

@ -0,0 +1,101 @@
import SwiftUI
extension NSMutableAttributedString {
func with(font: UIFont) -> NSMutableAttributedString {
enumerateAttribute(NSAttributedString.Key.font, in: NSMakeRange(0, length), options: .longestEffectiveRangeNotRequired, using: { (value, range, stop) in
if let originalFont = value as? UIFont, let newFont = applyTraitsFromFont(originalFont, to: font) {
addAttribute(NSAttributedString.Key.font, value: newFont, range: range)
}
})
return self
}
func applyTraitsFromFont(_ originalFont: UIFont, to newFont: UIFont) -> UIFont? {
let originalTrait = originalFont.fontDescriptor.symbolicTraits
if originalTrait.contains(.traitBold) {
var traits = newFont.fontDescriptor.symbolicTraits
traits.insert(.traitBold)
if let fontDescriptor = newFont.fontDescriptor.withSymbolicTraits(traits) {
return UIFont.init(descriptor: fontDescriptor, size: 0)
}
}
return newFont
}
}
final class AttributedTextComponent: UIViewRepresentable {
let string: NSMutableAttributedString
init(_ string: NSMutableAttributedString) {
self.string = string
}
public func makeUIView(context: UIViewRepresentableContext<AttributedTextComponent>) -> UILabel {
UILabel()
}
func updateUIView(_ uiView: UILabel, context: Context) {
uiView.backgroundColor = .clear
uiView.numberOfLines = 0
uiView.lineBreakMode = .byWordWrapping
uiView.setContentCompressionResistancePriority(.defaultLow, for: .horizontal)
uiView.attributedText = string
}
}
struct SizeKey: PreferenceKey {
static var defaultValue: CGSize = .zero
static func reduce(value: inout CGSize, nextValue: () -> CGSize) {
value = nextValue()
}
}
struct AttributedText: View {
let html: NSMutableAttributedString
let component: AttributedTextComponent
@State var height: CGFloat = 0.0
@State var lastSize: CGSize = .zero
init(_ html: NSMutableAttributedString) {
self.html = html.with(font: UIFont.preferredFont(forTextStyle: .body))
self.component = AttributedTextComponent(html)
}
func calculateHeight(size: CGSize) {
let label = UILabel(frame: CGRect(x: 0, y: 0, width: size.width, height: .greatestFiniteMagnitude))
label.numberOfLines = 0
label.lineBreakMode = .byWordWrapping
label.attributedText = self.html
label.sizeToFit()
self.height = label.frame.height
self.lastSize = size
}
var body: some View {
ZStack {
GeometryReader { geometry in
Rectangle().fill(Color.clear).preference(key: SizeKey.self, value: geometry.size)
}.onPreferenceChange(SizeKey.self, perform: { size in
self.calculateHeight(size: size)
})
component
}
.frame(minWidth: 0.0, maxWidth: .infinity, minHeight: self.height, maxHeight: self.height)
.onAppear {
if self.lastSize != .zero {
self.calculateHeight(size: self.lastSize)
}
}
}
}

73
MobileFort/MobileFort/PostView.swift
View file

@ -7,79 +7,6 @@ extension String {
}
}
final class AttributedTextComponent: UIViewRepresentable {
let string: NSMutableAttributedString
init(_ string: NSMutableAttributedString) {
self.string = string
}
public func makeUIView(context: UIViewRepresentableContext<AttributedTextComponent>) -> UILabel {
UILabel()
}
func updateUIView(_ uiView: UILabel, context: Context) {
uiView.backgroundColor = .clear
uiView.numberOfLines = 0
uiView.lineBreakMode = .byWordWrapping
uiView.setContentCompressionResistancePriority(.defaultLow, for: .horizontal)
uiView.attributedText = string
}
}
struct SizeKey: PreferenceKey {
static var defaultValue: CGSize = .zero
static func reduce(value: inout CGSize, nextValue: () -> CGSize) {
value = nextValue()
}
}
struct AttributedText: View {
let html: NSMutableAttributedString
let component: AttributedTextComponent
@State var height: CGFloat = 0.0
@State var lastSize: CGSize = .zero
init(_ html: NSMutableAttributedString) {
self.html = html
self.component = AttributedTextComponent(html)
}
func calculateHeight(size: CGSize) {
let label = UILabel(frame: CGRect(x: 0, y: 0, width: size.width, height: .greatestFiniteMagnitude))
label.numberOfLines = 0
label.lineBreakMode = .byWordWrapping
label.attributedText = self.html
label.sizeToFit()
self.height = label.frame.height
self.lastSize = size
}
var body: some View {
ZStack {
GeometryReader { geometry in
Rectangle().fill(Color.clear).preference(key: SizeKey.self, value: geometry.size)
}.onPreferenceChange(SizeKey.self, perform: { size in
self.calculateHeight(size: size)
})
component
}
.frame(minWidth: 0.0, maxWidth: .infinity, minHeight: self.height, maxHeight: self.height)
.onAppear {
if self.lastSize != .zero {
self.calculateHeight(size: self.lastSize)
}
}
}
}
struct PostView: View {
let post: ParsedPostContainer

29
MobileFort/MobileFort/ProfileView.swift
View file

@ -1,32 +1,5 @@
import SwiftUI
extension NSMutableAttributedString {
func with(font: UIFont) -> NSMutableAttributedString {
enumerateAttribute(NSAttributedString.Key.font, in: NSMakeRange(0, length), options: .longestEffectiveRangeNotRequired, using: { (value, range, stop) in
if let originalFont = value as? UIFont, let newFont = applyTraitsFromFont(originalFont, to: font) {
addAttribute(NSAttributedString.Key.font, value: newFont, range: range)
}
})
return self
}
func applyTraitsFromFont(_ originalFont: UIFont, to newFont: UIFont) -> UIFont? {
let originalTrait = originalFont.fontDescriptor.symbolicTraits
if originalTrait.contains(.traitBold) {
var traits = newFont.fontDescriptor.symbolicTraits
traits.insert(.traitBold)
if let fontDescriptor = newFont.fontDescriptor.withSymbolicTraits(traits) {
return UIFont.init(descriptor: fontDescriptor, size: 0)
}
}
return newFont
}
}
struct ProfileView: View {
let username: String
@ -55,7 +28,7 @@ struct ProfileView: View {
var postArray = [ParsedPostContainer]()
for post in decodedPosts.posts {
let container = ParsedPostContainer(post: post, contentAttributed: (try? NSMutableAttributedString(data: post.getContent().data(using: .utf8)!, options: [.documentType: NSAttributedString.DocumentType.html], documentAttributes: nil))!.with(font: UIFont.preferredFont(forTextStyle: .body)))
let container = ParsedPostContainer(post: post, contentAttributed: (try? NSMutableAttributedString(data: post.getContent().data(using: .utf8)!, options: [.documentType: NSAttributedString.DocumentType.html], documentAttributes: nil))!)
postArray.append(container)
}